標題: Simulations of Dielectric and Plasmonic Waveguide-Coupled Ring Resonators Using the Legendre Pseudospectral Time-Domain Method
作者: Chung, Shih-Yung
Wang, Chih-Yu
Teng, Chun-Hao
Chen, Chung-Ping
Chang, Hung-Chun
應用數學系
數學建模與科學計算所(含中心)
Department of Applied Mathematics
Graduate Program of Mathematical Modeling and Scientific Computing, Department of Applied Mathematics
關鍵字: Pseudospectral time-domain (PSTD) method;ring resonators;surface plasmon polaritons (SPPs)
公開日期: 1-Jun-2012
摘要: The accurate Legendre pseudospectral time-domain (PSTD) method is applied in this paper to the study of optical behaviors of 2-D dielectric and plasmonic waveguide-coupled ring resonators. Based on its inherent multidomain scheme with curvilinear-quadrilateral subdomain partitioning, the PSTD method possesses superior advantage in fulfilling field continuity conditions across material interfaces, which provides better numerical handling upon circular or even more complicated ring structures. Accordingly, investigations of several plasmonic nanoring resonators of different shapes with surface plasmon polariton (SPP) waves propagating on the metal/dielectric/metal waveguides are made with the aids of a well-fitted Drude-Lorentz material-dispersion model through analyzing their characteristics in the near-infrared and visible parts of the light spectrum. Especially, the racetrack-shaped ring is carefully designed with optimized track length to avoid the over-or under-coupling problem between the ring and input waveguides and, thus, achieve excellent spectral performance.
URI: http://hdl.handle.net/11536/15969
ISSN: 0733-8724
期刊: JOURNAL OF LIGHTWAVE TECHNOLOGY
Volume: 30
Issue: 11
結束頁: 1733
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